diff --git a/library/base64.c b/library/base64.c
index 9021a04..4170610 100644
--- a/library/base64.c
+++ b/library/base64.c
@@ -31,68 +31,65 @@
 #include "mbedtls/platform.h"
 #endif /* MBEDTLS_SELF_TEST */
 
-#define BASE64_SIZE_T_MAX   ( (size_t) -1 ) /* SIZE_T_MAX is not standard */
+#define BASE64_SIZE_T_MAX   ((size_t) -1)   /* SIZE_T_MAX is not standard */
 
 /*
  * Encode a buffer into base64 format
  */
-int mbedtls_base64_encode( unsigned char *dst, size_t dlen, size_t *olen,
-                   const unsigned char *src, size_t slen )
+int mbedtls_base64_encode(unsigned char *dst, size_t dlen, size_t *olen,
+                          const unsigned char *src, size_t slen)
 {
     size_t i, n;
     int C1, C2, C3;
     unsigned char *p;
 
-    if( slen == 0 )
-    {
+    if (slen == 0) {
         *olen = 0;
-        return( 0 );
+        return 0;
     }
 
-    n = slen / 3 + ( slen % 3 != 0 );
+    n = slen / 3 + (slen % 3 != 0);
 
-    if( n > ( BASE64_SIZE_T_MAX - 1 ) / 4 )
-    {
+    if (n > (BASE64_SIZE_T_MAX - 1) / 4) {
         *olen = BASE64_SIZE_T_MAX;
-        return( MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL );
+        return MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL;
     }
 
     n *= 4;
 
-    if( ( dlen < n + 1 ) || ( NULL == dst ) )
-    {
+    if ((dlen < n + 1) || (NULL == dst)) {
         *olen = n + 1;
-        return( MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL );
+        return MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL;
     }
 
-    n = ( slen / 3 ) * 3;
+    n = (slen / 3) * 3;
 
-    for( i = 0, p = dst; i < n; i += 3 )
-    {
+    for (i = 0, p = dst; i < n; i += 3) {
         C1 = *src++;
         C2 = *src++;
         C3 = *src++;
 
-        *p++ = mbedtls_ct_base64_enc_char( ( C1 >> 2 ) & 0x3F );
-        *p++ = mbedtls_ct_base64_enc_char( ( ( ( C1 &  3 ) << 4 ) + ( C2 >> 4 ) )
-                                        & 0x3F );
-        *p++ = mbedtls_ct_base64_enc_char( ( ( ( C2 & 15 ) << 2 ) + ( C3 >> 6 ) )
-                                        & 0x3F );
-        *p++ = mbedtls_ct_base64_enc_char( C3 & 0x3F );
+        *p++ = mbedtls_ct_base64_enc_char((C1 >> 2) & 0x3F);
+        *p++ = mbedtls_ct_base64_enc_char((((C1 &  3) << 4) + (C2 >> 4))
+                                          & 0x3F);
+        *p++ = mbedtls_ct_base64_enc_char((((C2 & 15) << 2) + (C3 >> 6))
+                                          & 0x3F);
+        *p++ = mbedtls_ct_base64_enc_char(C3 & 0x3F);
     }
 
-    if( i < slen )
-    {
+    if (i < slen) {
         C1 = *src++;
-        C2 = ( ( i + 1 ) < slen ) ? *src++ : 0;
+        C2 = ((i + 1) < slen) ? *src++ : 0;
 
-        *p++ = mbedtls_ct_base64_enc_char( ( C1 >> 2 ) & 0x3F );
-        *p++ = mbedtls_ct_base64_enc_char( ( ( ( C1 & 3 ) << 4 ) + ( C2 >> 4 ) )
-                                        & 0x3F );
+        *p++ = mbedtls_ct_base64_enc_char((C1 >> 2) & 0x3F);
+        *p++ = mbedtls_ct_base64_enc_char((((C1 & 3) << 4) + (C2 >> 4))
+                                          & 0x3F);
 
-        if( ( i + 1 ) < slen )
-             *p++ = mbedtls_ct_base64_enc_char( ( ( C2 & 15 ) << 2 ) & 0x3F );
-        else *p++ = '=';
+        if ((i + 1) < slen) {
+            *p++ = mbedtls_ct_base64_enc_char(((C2 & 15) << 2) & 0x3F);
+        } else {
+            *p++ = '=';
+        }
 
         *p++ = '=';
     }
@@ -100,14 +97,14 @@
     *olen = p - dst;
     *p = 0;
 
-    return( 0 );
+    return 0;
 }
 
 /*
  * Decode a base64-formatted buffer
  */
-int mbedtls_base64_decode( unsigned char *dst, size_t dlen, size_t *olen,
-                   const unsigned char *src, size_t slen )
+int mbedtls_base64_decode(unsigned char *dst, size_t dlen, size_t *olen,
+                          const unsigned char *src, size_t slen)
 {
     size_t i; /* index in source */
     size_t n; /* number of digits or trailing = in source */
@@ -118,92 +115,97 @@
     unsigned char *p;
 
     /* First pass: check for validity and get output length */
-    for( i = n = 0; i < slen; i++ )
-    {
+    for (i = n = 0; i < slen; i++) {
         /* Skip spaces before checking for EOL */
         spaces_present = 0;
-        while( i < slen && src[i] == ' ' )
-        {
+        while (i < slen && src[i] == ' ') {
             ++i;
             spaces_present = 1;
         }
 
         /* Spaces at end of buffer are OK */
-        if( i == slen )
+        if (i == slen) {
             break;
+        }
 
-        if( ( slen - i ) >= 2 &&
-            src[i] == '\r' && src[i + 1] == '\n' )
+        if ((slen - i) >= 2 &&
+            src[i] == '\r' && src[i + 1] == '\n') {
             continue;
+        }
 
-        if( src[i] == '\n' )
+        if (src[i] == '\n') {
             continue;
+        }
 
         /* Space inside a line is an error */
-        if( spaces_present )
-            return( MBEDTLS_ERR_BASE64_INVALID_CHARACTER );
-
-        if( src[i] > 127 )
-            return( MBEDTLS_ERR_BASE64_INVALID_CHARACTER );
-
-        if( src[i] == '=' )
-        {
-            if( ++equals > 2 )
-                return( MBEDTLS_ERR_BASE64_INVALID_CHARACTER );
+        if (spaces_present) {
+            return MBEDTLS_ERR_BASE64_INVALID_CHARACTER;
         }
-        else
-        {
-            if( equals != 0 )
-                return( MBEDTLS_ERR_BASE64_INVALID_CHARACTER );
-            if( mbedtls_ct_base64_dec_value( src[i] ) < 0 )
-                return( MBEDTLS_ERR_BASE64_INVALID_CHARACTER );
+
+        if (src[i] > 127) {
+            return MBEDTLS_ERR_BASE64_INVALID_CHARACTER;
+        }
+
+        if (src[i] == '=') {
+            if (++equals > 2) {
+                return MBEDTLS_ERR_BASE64_INVALID_CHARACTER;
+            }
+        } else {
+            if (equals != 0) {
+                return MBEDTLS_ERR_BASE64_INVALID_CHARACTER;
+            }
+            if (mbedtls_ct_base64_dec_value(src[i]) < 0) {
+                return MBEDTLS_ERR_BASE64_INVALID_CHARACTER;
+            }
         }
         n++;
     }
 
-    if( n == 0 )
-    {
+    if (n == 0) {
         *olen = 0;
-        return( 0 );
+        return 0;
     }
 
     /* The following expression is to calculate the following formula without
      * risk of integer overflow in n:
      *     n = ( ( n * 6 ) + 7 ) >> 3;
      */
-    n = ( 6 * ( n >> 3 ) ) + ( ( 6 * ( n & 0x7 ) + 7 ) >> 3 );
+    n = (6 * (n >> 3)) + ((6 * (n & 0x7) + 7) >> 3);
     n -= equals;
 
-    if( dst == NULL || dlen < n )
-    {
+    if (dst == NULL || dlen < n) {
         *olen = n;
-        return( MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL );
+        return MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL;
     }
 
     equals = 0;
-    for( x = 0, p = dst; i > 0; i--, src++ )
-    {
-        if( *src == '\r' || *src == '\n' || *src == ' ' )
+    for (x = 0, p = dst; i > 0; i--, src++) {
+        if (*src == '\r' || *src == '\n' || *src == ' ') {
             continue;
+        }
 
         x = x << 6;
-        if( *src == '=' )
+        if (*src == '=') {
             ++equals;
-        else
-            x |= mbedtls_ct_base64_dec_value( *src );
+        } else {
+            x |= mbedtls_ct_base64_dec_value(*src);
+        }
 
-        if( ++accumulated_digits == 4 )
-        {
+        if (++accumulated_digits == 4) {
             accumulated_digits = 0;
-            *p++ = MBEDTLS_BYTE_2( x );
-            if( equals <= 1 ) *p++ = MBEDTLS_BYTE_1( x );
-            if( equals <= 0 ) *p++ = MBEDTLS_BYTE_0( x );
+            *p++ = MBEDTLS_BYTE_2(x);
+            if (equals <= 1) {
+                *p++ = MBEDTLS_BYTE_1(x);
+            }
+            if (equals <= 0) {
+                *p++ = MBEDTLS_BYTE_0(x);
+            }
         }
     }
 
     *olen = p - dst;
 
-    return( 0 );
+    return 0;
 }
 
 #if defined(MBEDTLS_SELF_TEST)
@@ -227,44 +229,47 @@
 /*
  * Checkup routine
  */
-int mbedtls_base64_self_test( int verbose )
+int mbedtls_base64_self_test(int verbose)
 {
     size_t len;
     const unsigned char *src;
     unsigned char buffer[128];
 
-    if( verbose != 0 )
-        mbedtls_printf( "  Base64 encoding test: " );
+    if (verbose != 0) {
+        mbedtls_printf("  Base64 encoding test: ");
+    }
 
     src = base64_test_dec;
 
-    if( mbedtls_base64_encode( buffer, sizeof( buffer ), &len, src, 64 ) != 0 ||
-         memcmp( base64_test_enc, buffer, 88 ) != 0 )
-    {
-        if( verbose != 0 )
-            mbedtls_printf( "failed\n" );
+    if (mbedtls_base64_encode(buffer, sizeof(buffer), &len, src, 64) != 0 ||
+        memcmp(base64_test_enc, buffer, 88) != 0) {
+        if (verbose != 0) {
+            mbedtls_printf("failed\n");
+        }
 
-        return( 1 );
+        return 1;
     }
 
-    if( verbose != 0 )
-        mbedtls_printf( "passed\n  Base64 decoding test: " );
+    if (verbose != 0) {
+        mbedtls_printf("passed\n  Base64 decoding test: ");
+    }
 
     src = base64_test_enc;
 
-    if( mbedtls_base64_decode( buffer, sizeof( buffer ), &len, src, 88 ) != 0 ||
-         memcmp( base64_test_dec, buffer, 64 ) != 0 )
-    {
-        if( verbose != 0 )
-            mbedtls_printf( "failed\n" );
+    if (mbedtls_base64_decode(buffer, sizeof(buffer), &len, src, 88) != 0 ||
+        memcmp(base64_test_dec, buffer, 64) != 0) {
+        if (verbose != 0) {
+            mbedtls_printf("failed\n");
+        }
 
-        return( 1 );
+        return 1;
     }
 
-    if( verbose != 0 )
-        mbedtls_printf( "passed\n\n" );
+    if (verbose != 0) {
+        mbedtls_printf("passed\n\n");
+    }
 
-    return( 0 );
+    return 0;
 }
 
 #endif /* MBEDTLS_SELF_TEST */